<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.login-header {
				width: 100%;
				text-align: center;
				height: 30px;
				font-size: 24px;
				line-height: 30px;
			}

			ul,
			li,
			ol,
			dl,
			dt,
			dd,
			div,
			p,
			span,
			h1,
			h2,
			h3,
			h4,
			h5,
			h6,
			a {
				padding: 0px;
				margin: 0px;
			}

			.login {
				display: none;
				width: 512px;
				height: 280px;
				position: fixed;
				border: #ebebeb solid 1px;
				left: 50%;
				top: 50%;
				background: #ffffff;
				box-shadow: 0px 0px 20px #ddd;
				z-index: 9999;
				transform: translate(-50%, -50%);
			}

			.login-title {
				width: 100%;
				margin: 10px 0px 0px 0px;
				text-align: center;
				line-height: 40px;
				height: 40px;
				font-size: 18px;
				position: relative;
				cursor: move;
			}

			.login-input-content {
				margin-top: 20px;
			}

			.login-button {
				width: 50%;
				margin: 30px auto 0px auto;
				line-height: 40px;
				font-size: 14px;
				border: #ebebeb 1px solid;
				text-align: center;
			}

			.login-bg {
				display: none;
				width: 100%;
				height: 100%;
				position: fixed;
				top: 0px;
				left: 0px;
				background: rgba(0, 0, 0, .3);
			}

			a {
				text-decoration: none;
				color: #000000;
			}

			.login-button a {
				display: block;
			}

			.login-input input.list-input {
				float: left;
				line-height: 35px;
				height: 35px;
				width: 350px;
				border: #ebebeb 1px solid;
				text-indent: 5px;
			}

			.login-input {
				overflow: hidden;
				margin: 0px 0px 20px 0px;
			}

			.login-input label {
				float: left;
				width: 90px;
				padding-right: 10px;
				text-align: right;
				line-height: 35px;
				height: 35px;
				font-size: 14px;
			}

			.login-title span {
				position: absolute;
				font-size: 12px;
				right: -20px;
				top: -30px;
				background: #ffffff;
				border: #ebebeb solid 1px;
				width: 40px;
				height: 40px;
				border-radius: 20px;
			}
		</style>
	</head>
	<body>
		<div class="login-header"><a id="link" href="javascript:;">点击，弹出登录框</a></div>
		<div id="login" class="login">
			<div id="title" class="login-title">登录会员
				<span><a id="closeBtn" href="javascript:void(0);" class="close-login">关闭</a></span>
			</div>
			<div class="login-input-content">
				<div class="login-input">
					<label>用户名：</label>
					<input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
				</div>
				<div class="login-input">
					<label>登录密码：</label>
					<input type="password" placeholder="请输入登录密码" name="info[password]" id="password" class="list-input">
				</div>
			</div>
			<div id="loginBtn" class="login-button"><a href="javascript:void(0);" id="login-button-submit">登录会员</a>
			</div>
		</div>
		<!-- 遮盖层 -->
		<div id="bg" class="login-bg"></div>
		<script type="text/javascript">
			var link = document.querySelector("#link");
			var login = document.querySelector(".login");
			var loginBg = document.querySelector(".login-bg");
			var closeBtn = document.querySelector(".close-login");

			link.addEventListener("click", function() {
				login.style.display = "block";
				loginBg.style.display = "block";
			});

			closeBtn.addEventListener("click", function() {
				login.style.display = "none";
				loginBg.style.display = "none";
			})

			var title = document.querySelector("#title");
			title.addEventListener("mousedown", function(e) {
				//按下的时候,获取鼠标在盒子内的坐标
				var x = e.pageX - login.offsetLeft;
				var y = e.pageY - login.offsetTop;
				var fn = function(e) {
					login.style.left = e.pageX - x + 'px';
					login.style.top = e.pageY - y + 'px';
				};
				document.addEventListener("mousemove", fn);
				document.addEventListener("mouseup", function(e) {
					document.removeEventListener("mousemove", fn);
				})
			})
		</script>
	</body>
</html>
